After one of Violetta's cronies teases Mia over a personal issue she confided to Paula, Mia starts to doubt her roommate's loyalty as a friend. In Centopia, she has a much more dangerous scrape with deception, after a Tell-All creature acquired from the sneaky salesman Polytheus leads Mia and the elves into a treacherous trap. Mia will have to be clever to escape this one.